<template>
  <view>
    <view class="search-box"><uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar></view>

    <!-- 搜索建议列表 -->
    <view class="sugg-list" v-if="searchReaults.length !== 0">
      <view class="sugg-item" @click="gotoDetail(item)" v-for="(item, index) in searchReaults.goods" :key="index">
        <view class="goods-name">{{ item.goods_name }}</view>
        <uni-icons type="forward"></uni-icons>
      </view>
    </view>

    <!-- 搜索历史 -->
    <view class="history-box" v-else>
      <!-- 标题 -->
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="trash" size="17" @click="clean"></uni-icons>
      </view>
      <!-- 列表 -->
      <view class="history-list"><uni-tag :text="item" @click="gotoGoodsList(item)" inverted type="primary" :key="index" v-for="(item, index) in historyList"></uni-tag></view>
    </view>
  </view>
</template>

<script>
export default {
  data() {
    return {
      kw: '',
      timer: null,
      searchReaults: [],
      historyList: []
    };
  },
  methods: {
    input(e) {
      // 进行防抖处理
      clearTimeout(this.timer);
      this.timer = setTimeout(() => {
        this.kw = e;
        this._getSearchList();
      }, 500);
    },
    gotoDetail(item) {
      uni.navigateTo({
        url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
      });
    },
    async _getSearchList() {
      if (this.kw.length === 0) {
        this.searchReaults = [];
        return;
      }
      const { data: res } = await uni.$http.get('/api/public/v1/goods/search', { query: this.kw });
      this.searchReaults = res.message;

      // 添加新的搜索记录 数组去重+本地存储
      const newArr = this.historyList;
      newArr.unshift(this.kw);
      this.historyList = Array.from(new Set(newArr));
      uni.setStorageSync('kw', JSON.stringify(this.historyList));
    },
    clean() {
      this.historyList = [];
      uni.removeStorageSync('kw');
    },
    gotoGoodsList(item) {
      uni.navigateTo({
        url: '/subpkg/goods_list/goods_list?query=' + item
      });
    }
  },
  onLoad() {
    this.historyList = JSON.parse(uni.getStorageSync('kw') || '[]');
  }
};
</script>

<style lang="scss">
.search-box {
  position: sticky;
  top: 0;
  z-index: 999;
}

.sugg-list {
  padding: 0 5px;

  .sugg-item {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    .goods-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
  }
}

.history-box {
  padding: 0 5px;
  .history-title {
    display: flex;
    justify-content: space-between;
    height: 40px;
    align-items: center;
    font-size: 13px;
    border-bottom: 1px solid #efefef;
  }
  .history-list {
    display: flex;
    flex-wrap: wrap;
  }
}
</style>
